Port Injection System For Reduction Of Particulates From Turbocharged Direct Injection Gasoline Engines

    公开(公告)号:US20200370483A1

    公开(公告)日:2020-11-26

    申请号:US16988917

    申请日:2020-08-10

    摘要: The present invention describes a fuel-management system for minimizing particulate emissions in turbocharged direct injection gasoline engines. The system optimizes the use of port fuel injection (PFI) in combination with direct injection (DI), particularly in cold start and other transient conditions. In the present invention, the use of these control systems together with other control systems for increasing the effectiveness of port fuel injector use and for reducing particulate emissions from turbocharged direct injection engines is described. Particular attention is given to reducing particulate emissions that occur during cold start and transient conditions since a substantial fraction of the particulate emissions during a drive cycle occur at these times. Further optimization of the fuel management system for these conditions is important for reducing drive cycle emissions.

    Dimethyl Ether (DME) Enhanced Gasoline Engine
    8.
    发明申请
    Dimethyl Ether (DME) Enhanced Gasoline Engine 审中-公开
    二甲醚(DME)增强汽油发动机

    公开(公告)号:US20140325839A1

    公开(公告)日:2014-11-06

    申请号:US14336712

    申请日:2014-07-21

    IPC分类号: F02B1/12 B23P6/00

    摘要: An engine having DME pilot ignition is disclosed. DME Pilot ignition creates far more energy than a conventional spark plug, thus minimizes the possibility of misfire in the engine map. DME injection can be used in a number of ways. In one embodiment, DME injection replaces the conventional spark plug in an Otto cycle engine. In another embodiment, DME injection is used in addition to spark ignition to minimize the use of DME. In this embodiment, DME injection is only used during those portions of the engine map where misfire may occur, or during those times when a misfire sensor detects misfire. DME injection can also be used in conjunction with alcohol boosting in other embodiments.

    摘要翻译: 公开了具有DME引燃点火的发动机。 DME先导点火比常规火花塞产生更多的能量,从而最大限度地减少发动机地图失火的可能性。 DME注射可以以多种方式使用。 在一个实施例中,DME喷射替代奥托循环发动机中的常规火花塞。 在另一个实施方案中,除了火花点火之外还使用DME喷射以最小化DME的使用。 在该实施例中,仅在发动机地图发生失火的那些部分期间,或在失火传感器检测到失火的那些时间期间仅使用DME喷射。 在其他实施方案中,DME注射也可以与醇增压结合使用。

    Minimizing Alcohol Use In High Efficiency Alcohol Boosted Gasoline Engines
    9.
    发明申请
    Minimizing Alcohol Use In High Efficiency Alcohol Boosted Gasoline Engines 有权
    最大限度地减少酒精使用在高效酒精提升的汽油发动机

    公开(公告)号:US20140222319A1

    公开(公告)日:2014-08-07

    申请号:US14249706

    申请日:2014-04-10

    IPC分类号: F02D35/02

    摘要: A number of systems and methods are disclosed which increase the replenishment interval for anti-knock fluid. This is especially important during activities which require a large amount of anti-knock fluid, such as towing. In some embodiments, the systems and methods are used to reduce anti-knock fluid consumption. For example, changes to engine operation, such as rich operation, spark retarding, upspeeding, and variable valve timing, all serve to reduce the amount of anti-knock fluid required to eliminate knocking. In other embodiments, the composition of the anti-knock fluid is modified, such as by using a higher octane fluid, or through the addition of water to the anti-knock fluid. In other embodiments, the replenishment interval is increased through a larger anti-knock fluid storage capacity. In one embodiment, a three tank system is used where the third tank can be used to store gasoline or anti-knock fluid, depending on the driving conditions.

    摘要翻译: 公开了许多系统和方法,其增加了防爆液体的补充间隔。 这在需要大量抗爆液体(如牵引)的活动中特别重要。 在一些实施方案中,系统和方法用于减少抗爆液体消耗。 例如,发动机操作的变化,例如丰富的操作,火花熄灭,升速和可变气门正时,都用于减少消除爆震所需的防爆液体的量。 在其它实施方案中,抗爆液体的组合物例如通过使用较高辛烷值的流体,或通过向防爆液体中加入水进行改性。 在其他实施例中,补充间隔通过较大的防爆液体储存容量增加。 在一个实施例中,使用三罐系统,其中根据驾驶条件,第三罐可以用于储存汽油或防爆液体。